1. Balancing Energy Offers are submitted by the Balancing Service Providers for each Balancing Service Entity and for each mFRR Time Unit of the Dispatch Day, separately for mFRR and aFRR.

2. Balancing Energy Offers for mFRR may be submitted, at the latest, until the respective Deadline for Submission of mFRR Offers. The Deadline for Submission of mFRR Offers shall be fifteen (15) minutes before each mFRR Time Period to which the submitted mFRR Balancing Energy Offer applies.

3. Balancing Energy Offers for aFRR may be submitted, at the latest, until the respective Deadline for Submission of aFRR Offers. The Deadline for Submission of aFRR Offers shall be forty-five (45) minutes before each aFRR Time Period to which the submitted aFRR Balancing Energy Offer applies.

4. Each Balancing Energy Offer is assigned to a specific mFRR Time Unit during the Dispatch Day. In all other respects, the submission of mFRR and aFRR Balancing Energy Offers, with regard to the terms governing their content and form, shall be in accordance with the provisions laid down in Article 12.2.

5. For Dispatchable Generating Units and Pumped Storage Dispatchable Hydroelectric Generating Units, the ISP Balancing Energy Offers per Dispatch Period are automatically converted into equivalent 15-minute mFRR and aFRR Energy Market Offers. Each ISP Balancing Energy Offer per Dispatch Period shall be converted into two (2) equivalent 15-minute Balancing Energy Offers for mFRR and aFRR, in the same form and for the same Balancing Energy volumes and prices as those in the original offer. These automatically created Offers shall be deemed as submitted by the Participant and shall produce all the results provided for in this Rulebook, as if the Offers had been submitted by the Participant.

6. The price of the Balancing Energy Offers for mFRR and aFRR submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Generating Units, including Dispatchable Hydro Generation Units with pumped storage capability, must be an improved price in relation to the ISP Balancing Energy Offer submitted to the ISP for the Dispatch Period which includes the mFRR Time Unit. The term improved price means a lower price for upward Balancing Energy Offers and a higher price for downward Balancing Energy Offers. The price of the Balancing Energy Offers for mFRR and aFRR submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Generating Units, including Dispatchable Hydro Generation Units with pumped storage capability, cannot be changed in relation to the volume of the ISP Balancing Energy Offer submitted to the ISP for the Dispatch Period which includes the mFRR Time Unit.

7. For the Dispatchable RES Units Portfolios and the Dispatchable Load Portfolios after each ISP, for each Dispatch Period until the end of the Dispatch Day for which there is a corresponding obligation, in accordance with Article 14.5, the ISP Balancing Energy Offers shall be automatically converted into corresponding 15-minute mFRR and aFRR Energy Market Offers and shall replace any other currently valid offers. Each ISP Balancing Energy Offer per Dispatch Period shall be converted into two (2) equivalent 15-minute mFRR and aFRR Energy Market Offers with the same Balancing Energy prices and a volume corresponding to the sum of the volumes of Balancing Energy awarded under the ISP, together with the volume of Balancing Energy corresponding to the Balancing Capacity for mFRR or aFRR supply awarded under the ISP.

8. The price of mFRR and aFRR Balancing Energy Offers submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Load Portfolios, and Dispatchable RES Units Portfolios must be improved compared to the price of the ISP Balancing Energy Offer for the Dispatch Period that includes the mFRR Unit for volumes of Balancing Energy corresponding to the Balancing Energy awarded under the ISP and for the Balancing Energy volumes corresponding to the Balancing Capacity volume for mFRR or aFRR supply awarded under the ISP. The term improved price means a lower price for upward Balancing Energy Offers and a higher price for downward Balancing Energy Offers. The volumes of mFRR and aFRR Balancing Energy Offers submitted pursuant to paragraph 1 of this Article by Balancing Service Providers representing Dispatchable Load Portfolios, and Dispatchable RES Units Portfolios may not be reduced for the Dispatch Period that includes the mFRR Time Unit in relation to the sum of the volumes of Balancing Energy awarded under the ISP and the volumes of Balancing Energy corresponding to the Balancing Capacity for the provision of mFRR and aFRR awarded under the ISP.

9. The energy quantities included in the upward and downward Balancing Energy Offers submitted to the Balancing Energy Market by the Dispatchable Generating Units, including Dispatchable Hydro Generation Units with pumped storage capability, and the Dispatchable RES Units Portfolios shall be deemed to have been injected/absorbed at the meter connection point.

10. The energy quantities included in the upward and downward Balancing Energy Offers submitted to the Balancing Energy Market by the Dispatchable Load Portfolios shall be considered to be injected/absorbed at the Transmission System-Distribution System Boundary.

11. Details on the submission of Balancing Energy Offers are provided in the Technical Decisions "Manual FRR " and "Automatic FRR".

1. The HETS Operator shall carry out the process of converting aFRR Balancing Energy Offers into Standard Products as follows:

   a)    at three scheduled times to take into account the most recent execution of the ISP,
   b)    after the Deadline for the Submission of Offers for aFRR Balancing Energy on the Balancing Energy Market, and
   c)    at any other time deemed necessary by the HETS Operator.

2. The local aFRR merit order list is created through the Offer conversion process for both upward and downward directions during each mFRR Time Unit of the Dispatch Day, which includes eligible steps of upward and downward aFRR Balancing Energy Offers from the Balancing Service Providers, to whom aFRR Balancing Capacity has been awarded in accordance with the latest ISP resolution, without prejudice to the provisions of paragraph 6 of this Article.
3. Offers are ranked by price in the local aFRR merit order list. For upward aFRR Offers the ranking is from lowest to highest price, while for the downward aFRR Offers the ranking is from highest to lowest price.
4. Without prejudice to paragraph 6 of this Article, during execution of the conversion process for aFRR Balancing Energy Offers, the HETS Operator shall take into account the characteristics of aFRR Standard Products and the following information regarding the Entities to which aFRR Balancing Energy has been conferred:
   a)    the steps of upward and downward aFRR Balancing Energy Offers,
   b)    the Balancing Energy awarded for upward and downward aFRR in accordance with the latest resolution of the ISP,
   c)    technical constraints in accordance with Registered Characteristics,
   d)    the Market Schedules,
   e)    the Available Capacity, based on the most recent Non-Availability Declarations submitted.
5. In carrying out the conversion process of the aFRR Balancing Energy Offers, the HETS Operator shall identify the steps eligible for activation of aFRR Offers as follows:
   a)    The upward aFRR Balancing Energy Offer steps are selected from the Balancing Services Entity’s aFRR Reference Point and for a volume equal to the upward aFRR Balancing Energy granted to the Entity.
   b)    The downward aFRR Balancing Energy Offer steps are selected from the Balancing Services Entity’s aFRR Reference Point and for a volume equal to the downward aFRR Balancing Energy granted to the Entity.
   The aFRR Reference Point means the ISP Schedule and is used to determine the steps of Offers eligible for activation under the aFRR Process.
6. In exceptional cases where the provision of aFRR Balancing Capacity other than the results of the ISP is required for operational security reasons, the volume and the aFRR Reference Point referred to in paragraph 4 of this Article may be amended. More specifically, the volume may differ from the assigned aFRR Balancing Capacity, and the aFRR Reference Point may differ from the ISP Schedule, taking into account the Registered Characteristics and Availability of the Entity as well as the aFRR needs of the HETS.
7. Details of the conversion of aFRR Balancing Energy Offers into Standardized Products are described in the Technical Decision ‘Rules for the conversion of Balancing Energy Offers into Standardized Products on the Local Merit Order List.

1. On completion of the process of converting aFRR Balancing Energy Offers into Standard Product offers, the HETS Operator shall communicate the Local Merit Order List to the Balancing Service Providers.
2. In the event of an event affecting the activation of one or more eligible steps of the Offers, Balancing Service Providers shall promptly and without undue delay revise their availability on the Local aFRR Merit Order List, and shall submit appropriate justification at the same time. Eligible steps to provide upward aFRR are reviewed in descending order, starting with the step with the highest Balancing Energy Offer price. Eligible steps to provide downward aFRR are reviewed in ascending order, starting with the step with the lowest Balancing Energy Offer price.

The HETS Operator may revise the local aFRR merit order list for one or more mFRR Time Units due to operational security reasons, concerning the availability and/or the quantity of eligible Offer steps.